Lehi regulates carports as accessory buildings/structures under Chapter 26 of the Lehi City Development Code. Accessory buildings less than 16 feet in height may be located within 18 inches of the property line; buildings 16 to 24 feet have a 5-foot side yard setback; structures taller than 24 feet require an 8-foot side yard setback. No accessory building may sit closer than 12 feet to a house on a neighboring lot, and no accessory building may exceed the height of the primary residence.
Carports in Lehi are not separately defined as their own use type; they are governed by the accessory buildings and structures provisions in Chapter 26 (Accessory Uses) of the Lehi City Development Code. The published Lehi accessory building height-and-setback summary on engagelehi.org states that 'accessory buildings less than 16 feet in height can be located within 18 inches of the property line,' that 'accessory buildings between 16 and 24 feet in height have a 5 foot side yard setback,' and that 'accessory buildings taller than 24 feet in height have a minimum 8 foot side yard setback.' It also confirms that 'accessory buildings cannot be located closer than 12 feet to a house on a neighboring lot' and that an accessory building cannot exceed the height of the main residence. Detached carports are typically placed in a side or rear yard rather than a front yard, and they must respect the underlying residential zone's front yard setback because front-yard accessory buildings are restricted under Chapter 26. Attached carports are treated as part of the principal structure and must meet the underlying zone's front, side, and rear setbacks set in the Lehi Development Code dimensional tables for the relevant residential district. The Lehi Building Department, working under the Utah State Construction Code (which adopts the International Residential Code), administers carport permits, electrical permits where applicable, and inspections; the city has indicated that only sheds larger than 200 square feet require a building permit, but a carport's structural and electrical scope generally pushes it above that threshold. Lehi has also amended Chapter 26 in connection with Chapter 39 to add provisions for Accessory Dwelling Units consistent with Utah Code Section 10-9a-530, but a carport remains an accessory structure separate from any habitable ADU. Contact Lehi Building at (385) 201-1035 and Planning at (385) 201-1030 before construction.
Building or expanding a carport without a required building permit, locating it closer than 18 inches to the property line for low-height structures, missing the 5- or 8-foot side yard setback for taller structures, placing it within 12 feet of a neighbor's house, or exceeding the primary residence's height violates Chapter 26 of the Lehi Development Code and the Utah State Construction Code adopted by reference. The Lehi Building Department and Code Enforcement may issue stop-work orders, require after-the-fact permits or removal, and assess civil fines through the Justice Court. Continued non-compliance can be enforced through injunctive relief under Utah Code Section 10-9a-803.
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